Power-transmitting mechanism.



F. T. UVERROCKER. POWER TRANSMITTING MECHANISM.

- (Application flled Dec. 27, 1900.) (N 0 2 Sheets-Sheet No. 67l,655.Patented Apr. 9, IBM.

- Patented Apr. 9, l90l, F. T. OVEBROCKEB. POWER TRANSMITTING MECHANISM.

[Application filed Dec. 27, 1900.

2 Sheets-Sheet 2.

(N 0 Model.)

ll/ll,

THE uanms msns 00.. PROTO-LIYHQ. wuulusron, n. c,

UNITED STATES PATENT Orrrcs.

FREDRICK T. OVERROCKER, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR OFONE-THIRD TO ALONZO W. ALLEN, OF SAME PLACE.

POWER-TRANSMITTING MECHANISM.

SPECIFICATION forming part of Letters Patent N 0. 6'71 ,655. dated April9. 1901.

Application filed December 27, 1900, Serial No. 41,235. (No model.)

To mZZ whom, it \may concern: ed in a collar or sleeve d. To the sleeve(1 Be it known that I, FREDRIOK T. OVER- is connected by a pin-and-slotwarrangement ROCKER, a citizen of the United States, resid- (illustratedin Fig. 3) a forked arm (1 adapted ing at the city of Philadelphia, inthe county to slide back and forth in a bearing (i ad- 5 ofPhiladelphiaand State of Pennsylvania, justably supported by a rod (1 below thetahave invented certain new and useful Imble 6 of the machine to bedriven. The arm provements in Powerlransmitting Mechand is adapted to beshifted in the bearing (i ism for Sewing and other Machines, of which bymeans of a bell crank lever f, one end of the following is aspecification. which is slotted and connected by a pin (1 to 10 Myinvention has relation to a mechanism said arm (1 The bell-crank orangle leverfis for transmitting power from a power-shaft to pivoted, asatf, to a fixed part of the machine, asewing or other similar machine,andin such and the other end of the leverf is connected connection itrelates more particularly to the by a link f with a treadle f under theconconstruction and arrangement of snchamechtrol of the operator. Thedriving-wheel g of 15 anism. the machine g is arranged above theupperThe principal object of my invention is to friction-disk 9 supported byand turning provide a power-transmitting mechanism for with thevertically-arranged shaft g To the power-driven machines which isadapted to lower end of the shaft 9 is secured a second be readilycontrolled and regulated by the friction disk g arranged adjacent to and2o operator and also adapted to be instantly disadapted to be engaged bythe upper frictionconnected from the machine to permit of the Wheel (1of the shaft 12 when the machine gis immediate stoppage of said machine.to be operated. The shaft g and the two The nature and scope of myinvention will friction-disks g and g are adapted to be norbe more fullyunderstood from the following mally depressed under the tension of aspring 25 description, taken in connection with the ac- 9 The functionof the spring g is twofold-- com panying drawings, forming part hereof,namely, to press the lower disk 9* firmly in whichdown upon thefriction-wheel d on the shaft 1) Figure 1 is an end elevational view ofa and to lower the upper disk g out of engagepowertransmitting mechanismembodying ment with the driving-wheel g of the machine 0 main featuresof my invention. Fig. 2 is a y when the lower disk g is out ofengagefront elevational view thereof, and Figs. 3 ment with thefriction-wheel d. and 4 are enlarged detail views of the upper Theoperation of the mechanism is as folportion of the transmittingmechanism. lows: The motion of the friction wheel or Referring to thedrawings, 0. represents the disk a on the shaft a is transmitted through5 main or power shaft, upon which is secured a the friction-wheel b tothe shaft b and to the friction wheel or disk ct. Adjacent to one upperfriction-wheel d. When this wheel (Z face of this wheel or disk at islocated a fricrests under the disk g of the shaft g then tion-wheel b,the face of which, by preferthe said shaft and the disk g are driven,and cnce, is cone-shaped. This friction-wheel b consequently thedrivingwheel g of the ma- 9c '40 is secured to a shaft 1), supported atits lower chine g is operated. The shaft b and its upend in a bearingbadapted to swing in a verper friction-wheel d are both adapted to betical plane in a fork or yoke 6 which fork or shifted by the treadle fand connections, so yoke is adapted to swingin ahorizontal plane as tobring the friction-wheel at under the in a bracket or support I). Thelower end of disk g at its periphery or toward the center 45 the shaft bis thus supported by a swiveled of said disk 9 This movement of thefricconnection which permits of the rotation of tion-wheel d will resultby reason of the fact the shaft 1), as well as a vertical and sidethatit is carried at the free end of the shaft wise or lateral movement ofsaid shaft b. h, the other end of said shaft oscillating in The upperend of the shaft 1) is provided with a swiveled bearing b and hence asthe shaft 109 5o asecond friction-wheel d, andintermediate of b isshifted the wheel d travels in the arc of v the two wheels I) and (l theshaft 1) is supporta circle. When, therefore, the shaft b is shifted inone direction, the wheel (1 approaches and also clears the periphery ofthe disk 9 as indicated by dotted lines at the right of Fig. 3. When theshaft 1) is shifted in an opposite direction, the Wheel 01 in travelingthrough the arc approaches the axis 9 of the disk g The manipulation ofthe treadlef will thus serve to regulate the speed of the disk 9 andconsequently of the shaft 9 upper disk 9 and driving-Wheel g, since ifthe friction-wheel d rests on or near the periphery of the disk 9 thespeed of the said disk will be less than if the wheel d rests at or nearthe center of the disk. The Wheel (1 may be shifted by the treadle f andauxiliaries,v so as to clear the disk g in which instance the upper diskg will be withdrawn by the spring g from the driving-Wheel g and themachine 9 can be instantly stopped by the operator.

Having thus described the nature and object of myinvention, What Iclaimas new, and desire to secure by Letters Patent, is

1. In a device of the character described, a main or power shaft, asecond shaft in frictional connection at one end with the powershaft, adriving-wheel for the machine to be operated, a vertical shaft andfriction-disk adapted to drive said driving-wheel, and a secondfriction-disk on said vertical shaft adapted to be frictionally drivenby the second shaft.

2. In a device of the character described, a main or power shaft, aninclined shaft, a swiveled hearing at one end of said inclined shaft andin frictional connection with the power-shaft, a friction-disk and shaftadapted to operate the driving-wheel of the machine,- said disk beingfrictionally connected with the upper end of the inclined shaft, andmeans for laterally shifting the inclined shaft to increase or decreasethe speed of the friction-disk and shaft.

3. In a device of the character described, in combination with adriving-wheel and means for operating the same, of a frictiondiskcontrolling said means, a main powershaft, a second shaft frictionallyconnecting the power-shaft With the friction-disk, and means forshifting said second shaft to cause it to approach toward or recede fromthe center of said friction-disk, whereby the speed of said disk may bevaried.

In testimony whereof I have hereunto set my signature in the presence oftwo subscribing witnesses.

FREDK. T. OVERROCKER.

Witnesses:

J. WALTER DOUGLASS, THOMAS M. SMITH.

